Now we need to expand this by adding another chassis – C7000, with Flex10/10D modules or Flex Fabrics. As I understand, Flex10 support SFP, whereas the older 3020 do not support it. So what is the solution to add this new chassis to older Infra ? Which cable to order, which connection etc ? (we are thinking about Active Active 10GB uplinks ) Attaching the relevant quote I got with 1GB transceivers.